mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-23 12:07:03 +08:00
601 lines
19 KiB
C++
601 lines
19 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 "arrow.h"
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#include "diagramitem.h"
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#include "diagramscene.h"
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#include "diagramtextitem.h"
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#include "mainwindow.h"
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#include <QtWidgets>
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const int InsertTextButton = 10;
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//! [0]
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MainWindow::MainWindow()
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{
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createActions();
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createToolBox();
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createMenus();
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scene = new DiagramScene(itemMenu, this);
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scene->setSceneRect(QRectF(0, 0, 5000, 5000));
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connect(scene, &DiagramScene::itemInserted,
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this, &MainWindow::itemInserted);
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connect(scene, &DiagramScene::textInserted,
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this, &MainWindow::textInserted);
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connect(scene, &DiagramScene::itemSelected,
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this, &MainWindow::itemSelected);
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createToolbars();
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QHBoxLayout *layout = new QHBoxLayout;
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layout->addWidget(toolBox);
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view = new QGraphicsView(scene);
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layout->addWidget(view);
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QWidget *widget = new QWidget;
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widget->setLayout(layout);
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setCentralWidget(widget);
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setWindowTitle(tr("Diagramscene"));
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setUnifiedTitleAndToolBarOnMac(true);
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}
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//! [0]
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//! [1]
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void MainWindow::backgroundButtonGroupClicked(QAbstractButton *button)
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{
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const QList<QAbstractButton *> buttons = backgroundButtonGroup->buttons();
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for (QAbstractButton *myButton : buttons) {
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if (myButton != button)
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button->setChecked(false);
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}
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QString text = button->text();
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if (text == tr("Blue Grid"))
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scene->setBackgroundBrush(QPixmap(":/images/background1.png"));
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else if (text == tr("White Grid"))
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scene->setBackgroundBrush(QPixmap(":/images/background2.png"));
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else if (text == tr("Gray Grid"))
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scene->setBackgroundBrush(QPixmap(":/images/background3.png"));
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else
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scene->setBackgroundBrush(QPixmap(":/images/background4.png"));
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scene->update();
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view->update();
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}
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//! [1]
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//! [2]
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void MainWindow::buttonGroupClicked(QAbstractButton *button)
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{
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const QList<QAbstractButton *> buttons = buttonGroup->buttons();
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for (QAbstractButton *myButton : buttons) {
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if (myButton != button)
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button->setChecked(false);
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}
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const int id = buttonGroup->id(button);
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if (id == InsertTextButton) {
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scene->setMode(DiagramScene::InsertText);
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} else {
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scene->setItemType(DiagramItem::DiagramType(id));
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scene->setMode(DiagramScene::InsertItem);
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}
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}
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//! [2]
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//! [3]
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void MainWindow::deleteItem()
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{
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QList<QGraphicsItem *> selectedItems = scene->selectedItems();
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for (QGraphicsItem *item : std::as_const(selectedItems)) {
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if (item->type() == Arrow::Type) {
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scene->removeItem(item);
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Arrow *arrow = qgraphicsitem_cast<Arrow *>(item);
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arrow->startItem()->removeArrow(arrow);
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arrow->endItem()->removeArrow(arrow);
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delete item;
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}
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}
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selectedItems = scene->selectedItems();
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for (QGraphicsItem *item : std::as_const(selectedItems)) {
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if (item->type() == DiagramItem::Type)
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qgraphicsitem_cast<DiagramItem *>(item)->removeArrows();
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scene->removeItem(item);
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delete item;
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}
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}
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//! [3]
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//! [4]
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void MainWindow::pointerGroupClicked()
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{
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scene->setMode(DiagramScene::Mode(pointerTypeGroup->checkedId()));
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}
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//! [4]
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//! [5]
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void MainWindow::bringToFront()
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{
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if (scene->selectedItems().isEmpty())
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return;
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QGraphicsItem *selectedItem = scene->selectedItems().first();
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const QList<QGraphicsItem *> overlapItems = selectedItem->collidingItems();
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qreal zValue = 0;
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for (const QGraphicsItem *item : overlapItems) {
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if (item->zValue() >= zValue && item->type() == DiagramItem::Type)
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zValue = item->zValue() + 0.1;
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}
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selectedItem->setZValue(zValue);
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}
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//! [5]
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//! [6]
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void MainWindow::sendToBack()
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{
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if (scene->selectedItems().isEmpty())
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return;
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QGraphicsItem *selectedItem = scene->selectedItems().first();
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const QList<QGraphicsItem *> overlapItems = selectedItem->collidingItems();
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qreal zValue = 0;
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for (const QGraphicsItem *item : overlapItems) {
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if (item->zValue() <= zValue && item->type() == DiagramItem::Type)
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zValue = item->zValue() - 0.1;
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}
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selectedItem->setZValue(zValue);
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}
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//! [6]
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//! [7]
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void MainWindow::itemInserted(DiagramItem *item)
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{
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pointerTypeGroup->button(int(DiagramScene::MoveItem))->setChecked(true);
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scene->setMode(DiagramScene::Mode(pointerTypeGroup->checkedId()));
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buttonGroup->button(int(item->diagramType()))->setChecked(false);
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}
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//! [7]
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//! [8]
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void MainWindow::textInserted(QGraphicsTextItem *)
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{
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buttonGroup->button(InsertTextButton)->setChecked(false);
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scene->setMode(DiagramScene::Mode(pointerTypeGroup->checkedId()));
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}
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//! [8]
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//! [9]
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void MainWindow::currentFontChanged(const QFont &)
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{
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handleFontChange();
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}
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//! [9]
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//! [10]
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void MainWindow::fontSizeChanged(const QString &)
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{
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handleFontChange();
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}
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//! [10]
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//! [11]
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void MainWindow::sceneScaleChanged(const QString &scale)
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{
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double newScale = scale.left(scale.indexOf(tr("%"))).toDouble() / 100.0;
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QTransform oldMatrix = view->transform();
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view->resetTransform();
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view->translate(oldMatrix.dx(), oldMatrix.dy());
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view->scale(newScale, newScale);
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}
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//! [11]
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//! [12]
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void MainWindow::textColorChanged()
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{
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textAction = qobject_cast<QAction *>(sender());
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fontColorToolButton->setIcon(createColorToolButtonIcon(
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":/images/textpointer.png",
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qvariant_cast<QColor>(textAction->data())));
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textButtonTriggered();
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}
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//! [12]
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//! [13]
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void MainWindow::itemColorChanged()
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{
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fillAction = qobject_cast<QAction *>(sender());
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fillColorToolButton->setIcon(createColorToolButtonIcon(
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":/images/floodfill.png",
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qvariant_cast<QColor>(fillAction->data())));
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fillButtonTriggered();
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}
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//! [13]
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//! [14]
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void MainWindow::lineColorChanged()
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{
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lineAction = qobject_cast<QAction *>(sender());
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lineColorToolButton->setIcon(createColorToolButtonIcon(
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":/images/linecolor.png",
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qvariant_cast<QColor>(lineAction->data())));
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lineButtonTriggered();
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}
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//! [14]
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//! [15]
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void MainWindow::textButtonTriggered()
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{
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scene->setTextColor(qvariant_cast<QColor>(textAction->data()));
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}
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//! [15]
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//! [16]
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void MainWindow::fillButtonTriggered()
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{
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scene->setItemColor(qvariant_cast<QColor>(fillAction->data()));
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}
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//! [16]
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//! [17]
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void MainWindow::lineButtonTriggered()
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{
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scene->setLineColor(qvariant_cast<QColor>(lineAction->data()));
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}
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//! [17]
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//! [18]
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void MainWindow::handleFontChange()
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{
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QFont font = fontCombo->currentFont();
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font.setPointSize(fontSizeCombo->currentText().toInt());
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font.setWeight(boldAction->isChecked() ? QFont::Bold : QFont::Normal);
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font.setItalic(italicAction->isChecked());
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font.setUnderline(underlineAction->isChecked());
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scene->setFont(font);
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}
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//! [18]
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//! [19]
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void MainWindow::itemSelected(QGraphicsItem *item)
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{
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DiagramTextItem *textItem =
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qgraphicsitem_cast<DiagramTextItem *>(item);
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QFont font = textItem->font();
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fontCombo->setCurrentFont(font);
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fontSizeCombo->setEditText(QString().setNum(font.pointSize()));
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boldAction->setChecked(font.weight() == QFont::Bold);
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italicAction->setChecked(font.italic());
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underlineAction->setChecked(font.underline());
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}
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//! [19]
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//! [20]
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void MainWindow::about()
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{
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QMessageBox::about(this, tr("About Diagram Scene"),
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tr("The <b>Diagram Scene</b> example shows "
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"use of the graphics framework."));
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}
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//! [20]
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//! [21]
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void MainWindow::createToolBox()
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{
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buttonGroup = new QButtonGroup(this);
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buttonGroup->setExclusive(false);
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connect(buttonGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
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this, &MainWindow::buttonGroupClicked);
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QGridLayout *layout = new QGridLayout;
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layout->addWidget(createCellWidget(tr("Conditional"), DiagramItem::Conditional), 0, 0);
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layout->addWidget(createCellWidget(tr("Process"), DiagramItem::Step),0, 1);
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layout->addWidget(createCellWidget(tr("Input/Output"), DiagramItem::Io), 1, 0);
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//! [21]
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QToolButton *textButton = new QToolButton;
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textButton->setCheckable(true);
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buttonGroup->addButton(textButton, InsertTextButton);
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textButton->setIcon(QIcon(QPixmap(":/images/textpointer.png")));
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textButton->setIconSize(QSize(50, 50));
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QGridLayout *textLayout = new QGridLayout;
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textLayout->addWidget(textButton, 0, 0, Qt::AlignHCenter);
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textLayout->addWidget(new QLabel(tr("Text")), 1, 0, Qt::AlignCenter);
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QWidget *textWidget = new QWidget;
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textWidget->setLayout(textLayout);
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layout->addWidget(textWidget, 1, 1);
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layout->setRowStretch(3, 10);
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layout->setColumnStretch(2, 10);
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QWidget *itemWidget = new QWidget;
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itemWidget->setLayout(layout);
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backgroundButtonGroup = new QButtonGroup(this);
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connect(backgroundButtonGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
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this, &MainWindow::backgroundButtonGroupClicked);
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QGridLayout *backgroundLayout = new QGridLayout;
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backgroundLayout->addWidget(createBackgroundCellWidget(tr("Blue Grid"),
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":/images/background1.png"), 0, 0);
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backgroundLayout->addWidget(createBackgroundCellWidget(tr("White Grid"),
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":/images/background2.png"), 0, 1);
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backgroundLayout->addWidget(createBackgroundCellWidget(tr("Gray Grid"),
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":/images/background3.png"), 1, 0);
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backgroundLayout->addWidget(createBackgroundCellWidget(tr("No Grid"),
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":/images/background4.png"), 1, 1);
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backgroundLayout->setRowStretch(2, 10);
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backgroundLayout->setColumnStretch(2, 10);
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QWidget *backgroundWidget = new QWidget;
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backgroundWidget->setLayout(backgroundLayout);
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//! [22]
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toolBox = new QToolBox;
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toolBox->setSizePolicy(QSizePolicy(QSizePolicy::Maximum, QSizePolicy::Ignored));
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toolBox->setMinimumWidth(itemWidget->sizeHint().width());
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toolBox->addItem(itemWidget, tr("Basic Flowchart Shapes"));
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toolBox->addItem(backgroundWidget, tr("Backgrounds"));
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}
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//! [22]
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//! [23]
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void MainWindow::createActions()
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{
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toFrontAction = new QAction(QIcon(":/images/bringtofront.png"),
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tr("Bring to &Front"), this);
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toFrontAction->setShortcut(tr("Ctrl+F"));
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toFrontAction->setStatusTip(tr("Bring item to front"));
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connect(toFrontAction, &QAction::triggered, this, &MainWindow::bringToFront);
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//! [23]
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sendBackAction = new QAction(QIcon(":/images/sendtoback.png"), tr("Send to &Back"), this);
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sendBackAction->setShortcut(tr("Ctrl+T"));
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sendBackAction->setStatusTip(tr("Send item to back"));
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connect(sendBackAction, &QAction::triggered, this, &MainWindow::sendToBack);
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deleteAction = new QAction(QIcon(":/images/delete.png"), tr("&Delete"), this);
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deleteAction->setShortcut(tr("Delete"));
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deleteAction->setStatusTip(tr("Delete item from diagram"));
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connect(deleteAction, &QAction::triggered, this, &MainWindow::deleteItem);
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exitAction = new QAction(tr("E&xit"), this);
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exitAction->setShortcuts(QKeySequence::Quit);
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exitAction->setStatusTip(tr("Quit Scenediagram example"));
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connect(exitAction, &QAction::triggered, this, &QWidget::close);
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boldAction = new QAction(tr("Bold"), this);
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boldAction->setCheckable(true);
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QPixmap pixmap(":/images/bold.png");
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boldAction->setIcon(QIcon(pixmap));
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boldAction->setShortcut(tr("Ctrl+B"));
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connect(boldAction, &QAction::triggered, this, &MainWindow::handleFontChange);
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italicAction = new QAction(QIcon(":/images/italic.png"), tr("Italic"), this);
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italicAction->setCheckable(true);
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italicAction->setShortcut(tr("Ctrl+I"));
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connect(italicAction, &QAction::triggered, this, &MainWindow::handleFontChange);
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underlineAction = new QAction(QIcon(":/images/underline.png"), tr("Underline"), this);
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underlineAction->setCheckable(true);
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underlineAction->setShortcut(tr("Ctrl+U"));
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connect(underlineAction, &QAction::triggered, this, &MainWindow::handleFontChange);
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aboutAction = new QAction(tr("A&bout"), this);
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aboutAction->setShortcut(tr("F1"));
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connect(aboutAction, &QAction::triggered, this, &MainWindow::about);
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}
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//! [24]
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void MainWindow::createMenus()
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{
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fileMenu = menuBar()->addMenu(tr("&File"));
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fileMenu->addAction(exitAction);
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itemMenu = menuBar()->addMenu(tr("&Item"));
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itemMenu->addAction(deleteAction);
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itemMenu->addSeparator();
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itemMenu->addAction(toFrontAction);
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itemMenu->addAction(sendBackAction);
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aboutMenu = menuBar()->addMenu(tr("&Help"));
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aboutMenu->addAction(aboutAction);
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}
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//! [24]
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//! [25]
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void MainWindow::createToolbars()
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{
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//! [25]
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editToolBar = addToolBar(tr("Edit"));
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editToolBar->addAction(deleteAction);
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editToolBar->addAction(toFrontAction);
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editToolBar->addAction(sendBackAction);
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fontCombo = new QFontComboBox();
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connect(fontCombo, &QFontComboBox::currentFontChanged,
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this, &MainWindow::currentFontChanged);
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fontSizeCombo = new QComboBox;
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fontSizeCombo->setEditable(true);
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for (int i = 8; i < 30; i = i + 2)
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fontSizeCombo->addItem(QString().setNum(i));
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QIntValidator *validator = new QIntValidator(2, 64, this);
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fontSizeCombo->setValidator(validator);
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connect(fontSizeCombo, &QComboBox::currentTextChanged,
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this, &MainWindow::fontSizeChanged);
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fontColorToolButton = new QToolButton;
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fontColorToolButton->setPopupMode(QToolButton::MenuButtonPopup);
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fontColorToolButton->setMenu(createColorMenu(&MainWindow::textColorChanged, Qt::black));
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textAction = fontColorToolButton->menu()->defaultAction();
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fontColorToolButton->setIcon(createColorToolButtonIcon(":/images/textpointer.png", Qt::black));
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fontColorToolButton->setAutoFillBackground(true);
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connect(fontColorToolButton, &QAbstractButton::clicked,
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this, &MainWindow::textButtonTriggered);
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//! [26]
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fillColorToolButton = new QToolButton;
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fillColorToolButton->setPopupMode(QToolButton::MenuButtonPopup);
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fillColorToolButton->setMenu(createColorMenu(&MainWindow::itemColorChanged, Qt::white));
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fillAction = fillColorToolButton->menu()->defaultAction();
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fillColorToolButton->setIcon(createColorToolButtonIcon(
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":/images/floodfill.png", Qt::white));
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connect(fillColorToolButton, &QAbstractButton::clicked,
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this, &MainWindow::fillButtonTriggered);
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//! [26]
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lineColorToolButton = new QToolButton;
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lineColorToolButton->setPopupMode(QToolButton::MenuButtonPopup);
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lineColorToolButton->setMenu(createColorMenu(&MainWindow::lineColorChanged, Qt::black));
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lineAction = lineColorToolButton->menu()->defaultAction();
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lineColorToolButton->setIcon(createColorToolButtonIcon(
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":/images/linecolor.png", Qt::black));
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connect(lineColorToolButton, &QAbstractButton::clicked,
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this, &MainWindow::lineButtonTriggered);
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textToolBar = addToolBar(tr("Font"));
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textToolBar->addWidget(fontCombo);
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textToolBar->addWidget(fontSizeCombo);
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textToolBar->addAction(boldAction);
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textToolBar->addAction(italicAction);
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textToolBar->addAction(underlineAction);
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colorToolBar = addToolBar(tr("Color"));
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colorToolBar->addWidget(fontColorToolButton);
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colorToolBar->addWidget(fillColorToolButton);
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colorToolBar->addWidget(lineColorToolButton);
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QToolButton *pointerButton = new QToolButton;
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pointerButton->setCheckable(true);
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pointerButton->setChecked(true);
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pointerButton->setIcon(QIcon(":/images/pointer.png"));
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QToolButton *linePointerButton = new QToolButton;
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linePointerButton->setCheckable(true);
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linePointerButton->setIcon(QIcon(":/images/linepointer.png"));
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pointerTypeGroup = new QButtonGroup(this);
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pointerTypeGroup->addButton(pointerButton, int(DiagramScene::MoveItem));
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pointerTypeGroup->addButton(linePointerButton, int(DiagramScene::InsertLine));
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connect(pointerTypeGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
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this, &MainWindow::pointerGroupClicked);
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sceneScaleCombo = new QComboBox;
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QStringList scales;
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scales << tr("50%") << tr("75%") << tr("100%") << tr("125%") << tr("150%");
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sceneScaleCombo->addItems(scales);
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sceneScaleCombo->setCurrentIndex(2);
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connect(sceneScaleCombo, &QComboBox::currentTextChanged,
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|
this, &MainWindow::sceneScaleChanged);
|
|
|
|
pointerToolbar = addToolBar(tr("Pointer type"));
|
|
pointerToolbar->addWidget(pointerButton);
|
|
pointerToolbar->addWidget(linePointerButton);
|
|
pointerToolbar->addWidget(sceneScaleCombo);
|
|
//! [27]
|
|
}
|
|
//! [27]
|
|
|
|
//! [28]
|
|
QWidget *MainWindow::createBackgroundCellWidget(const QString &text, const QString &image)
|
|
{
|
|
QToolButton *button = new QToolButton;
|
|
button->setText(text);
|
|
button->setIcon(QIcon(image));
|
|
button->setIconSize(QSize(50, 50));
|
|
button->setCheckable(true);
|
|
backgroundButtonGroup->addButton(button);
|
|
|
|
QGridLayout *layout = new QGridLayout;
|
|
layout->addWidget(button, 0, 0, Qt::AlignHCenter);
|
|
layout->addWidget(new QLabel(text), 1, 0, Qt::AlignCenter);
|
|
|
|
QWidget *widget = new QWidget;
|
|
widget->setLayout(layout);
|
|
|
|
return widget;
|
|
}
|
|
//! [28]
|
|
|
|
//! [29]
|
|
QWidget *MainWindow::createCellWidget(const QString &text, DiagramItem::DiagramType type)
|
|
{
|
|
|
|
DiagramItem item(type, itemMenu);
|
|
QIcon icon(item.image());
|
|
|
|
QToolButton *button = new QToolButton;
|
|
button->setIcon(icon);
|
|
button->setIconSize(QSize(50, 50));
|
|
button->setCheckable(true);
|
|
buttonGroup->addButton(button, int(type));
|
|
|
|
QGridLayout *layout = new QGridLayout;
|
|
layout->addWidget(button, 0, 0, Qt::AlignHCenter);
|
|
layout->addWidget(new QLabel(text), 1, 0, Qt::AlignCenter);
|
|
|
|
QWidget *widget = new QWidget;
|
|
widget->setLayout(layout);
|
|
|
|
return widget;
|
|
}
|
|
//! [29]
|
|
|
|
//! [30]
|
|
template<typename PointerToMemberFunction>
|
|
QMenu *MainWindow::createColorMenu(const PointerToMemberFunction &slot, QColor defaultColor)
|
|
{
|
|
QList<QColor> colors;
|
|
colors << Qt::black << Qt::white << Qt::red << Qt::blue << Qt::yellow;
|
|
QStringList names;
|
|
names << tr("black") << tr("white") << tr("red") << tr("blue")
|
|
<< tr("yellow");
|
|
|
|
QMenu *colorMenu = new QMenu(this);
|
|
for (int i = 0; i < colors.count(); ++i) {
|
|
QAction *action = new QAction(names.at(i), this);
|
|
action->setData(colors.at(i));
|
|
action->setIcon(createColorIcon(colors.at(i)));
|
|
connect(action, &QAction::triggered, this, slot);
|
|
colorMenu->addAction(action);
|
|
if (colors.at(i) == defaultColor)
|
|
colorMenu->setDefaultAction(action);
|
|
}
|
|
return colorMenu;
|
|
}
|
|
//! [30]
|
|
|
|
//! [31]
|
|
QIcon MainWindow::createColorToolButtonIcon(const QString &imageFile, QColor color)
|
|
{
|
|
QPixmap pixmap(50, 80);
|
|
pixmap.fill(Qt::transparent);
|
|
QPainter painter(&pixmap);
|
|
QPixmap image(imageFile);
|
|
// Draw icon centred horizontally on button.
|
|
QRect target(4, 0, 42, 43);
|
|
QRect source(0, 0, 42, 43);
|
|
painter.fillRect(QRect(0, 60, 50, 80), color);
|
|
painter.drawPixmap(target, image, source);
|
|
|
|
return QIcon(pixmap);
|
|
}
|
|
//! [31]
|
|
|
|
//! [32]
|
|
QIcon MainWindow::createColorIcon(QColor color)
|
|
{
|
|
QPixmap pixmap(20, 20);
|
|
QPainter painter(&pixmap);
|
|
painter.setPen(Qt::NoPen);
|
|
painter.fillRect(QRect(0, 0, 20, 20), color);
|
|
|
|
return QIcon(pixmap);
|
|
}
|
|
//! [32]
|