基于Qt实现的电路图编辑程序

#include "arrow.h" #include "diagramitem.h" #include "diagramtextitem.h" #include "diagramscene.h" #include "mainwindow.h" #include "commands.h" #include "ui_mainwindow.h" #include <QtWidgets> #include <qmap.h> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); undoStack = new QUndoStack(this); undoStack->setUndoLimit( 5 ); // createUndoView(); createToolBox(); connect(ui->backgroundButtonGroup, SIGNAL(buttonClicked(QAbstractButton*)),this, SLOT(backgroundButtonGroupClicked(QAbstractButton*))); //初始化场景 scene = new DiagramScene( ui->menuItem , this); scene->setSceneRect(QRectF(0, 0, 1920, 1080)); connect(scene, SIGNAL(itemInserted(DiagramItem*)), this, SLOT(itemInserted(DiagramItem*))); connect(scene, SIGNAL(itemMoved(DiagramItem*,QPointF)),this, SLOT(itemMoved(DiagramItem*,QPointF))); createToolbars(); //关联视图场景 ui->view->setScene( scene ); setUnifiedTitleAndToolBarOnMac(true); } /** * @brief MainWindow::createUndoView * 创建撤销窗口,未使用 */ void MainWindow::createUndoView() { undoView = new QUndoView(undoStack); undoView->setWindowTitle(tr("Command List")); undoView->setWindowFlags(undoView->windowFlags() | Qt::WindowStaysOnTopHint); undoView->raise(); undoView->show(); undoView->setAttribute(Qt::WA_QuitOnClose, false); } /** * @brief MainWindow::backgroundButtonGroupClicked * 关联背景按钮 * @param button */ void MainWindow::backgroundButtonGroupClicked(QAbstractButton *button) { QList<QAbstractButton *> buttons = ui->backgroundButtonGroup->buttons(); foreach (QAbstractButton *myButton, buttons) { if (myButton != button) button->setChecked(false); } QString text = button->text(); if (text == tr("Blue Grid")) scene->setBackgroundBrush(QPixmap(":/images/background1.png")); else if (text == tr("White Grid")) scene->setBackgroundBrush(QPixmap(":/images/background2.png")); else if (text == tr("Gray Grid")) scene->setBackgroundBrush(QPixmap(":/images/background3.png")); else scene->setBackgroundBrush(QPixmap(":/images/background4.png")); scene->update(); ui->view->update(); } void MainWindow::itemMoved(DiagramItem *movedItem, const QPointF &oldPosition) { undoStack->push(new MoveCommand(movedItem, oldPosition)); } /** * @brief MainWindow::buttonGroupClicked * 响应元件按钮功能, 在场景中插入元件item * @param id */ void MainWindow::buttonGroupClicked(int id) { QList<QAbstractButton *> buttons = buttonGroup->buttons(); foreach (QAbstractButton *button, buttons) { if (buttonGroup->button(id) != button) button->setChecked(false); } scene->setItemType(DiagramItem::DiagramType(id)); if (DiagramItem::DiagramType(id) == DiagramItem::Text) { scene->setMode(DiagramScene::InsertText); } else { scene->setMode(DiagramScene::InsertItem); } } /** * @brief MainWindow::on_deleteAction_triggered * 删除元件item动作 */ void MainWindow::on_deleteAction_triggered() { deleteItem(); } void MainWindow::deleteItem() { QUndoCommand *deleteCommand = new DeleteCommand(scene); undoStack->push(deleteCommand); scene->update(); } /** * @brief MainWindow::pointerGroupClicked * 设置绘制元件类型 */ void MainWindow::pointerGroupClicked(int) { scene->setMode(DiagramScene::Mode(pointerTypeGroup->checkedId())); } /** * @brief MainWindow::on_toFrontAction_triggered * 响应前置动作 */ void MainWindow::on_toFrontAction_triggered() { if (scene->selectedItems().isEmpty()) return; QGraphicsItem *selectedItem = scene->selectedItems().first(); QList<QGraphicsItem *> overlapItems = selectedItem->collidingItems(); qreal zValue = 0; foreach (QGraphicsItem *item, overlapItems) { if (item->zValue() >= zValue && item->type() == DiagramItem::Type) zValue = item->zValue() + 0.1; } selectedItem->setZValue(zValue); } /** * @brief MainWindow::on_sendBackAction_triggered * 响应后置动作 */ void MainWindow::on_sendBackAction_triggered() { if (scene->selectedItems().isEmpty()) return; QGraphicsItem *selectedItem = scene->selectedItems().first(); QList<QGraphicsItem *> overlapItems = selectedItem->collidingItems(); qreal zValue = 0; foreach (QGraphicsItem *item, overlapItems) { if (item->zValue() <= zValue && item->type() == DiagramItem::Type) zValue = item->zValue() - 0.1; } selectedItem->setZValue(zValue); } /** * @brief MainWindow::itemInserted * 对插入元件item,作出关联,command, 实现撤销恢复功能 * @param item */ void MainWindow::itemInserted(DiagramItem *item) { pointerTypeGroup->button(int(DiagramScene::MoveItem))->setChecked(true); scene->setMode(DiagramScene::Mode(pointerTypeGroup->checkedId())); buttonGroup->button(int(item->diagramType()))->setChecked(false); // add item QUndoCommand *addCommand = new AddCommand(item, scene); undoStack->push(addCommand); } /** * @brief MainWindow::on_actRotateLeft_triggered * 实现向左旋转90 */ void MainWindow::on_actRotateLeft_triggered() { if (scene->selectedItems().isEmpty()) return; QGraphicsItem *selectedItem = scene->selectedItems().first(); if( selectedItem->type()==QGraphicsItemGroup::Type ) return; selectedItem->setRotation(-90+selectedItem->rotation()); scene->update(); } /** * @brief MainWindow::on_actRotateRight_triggered * 实现向右旋转90 */ void MainWindow::on_actRotateRight_triggered() { if (scene->selectedItems().isEmpty()) return; QGraphicsItem *selectedItem = scene->selectedItems().first(); if( selectedItem->type()==QGraphicsItemGroup::Type ) return; selectedItem->setRotation(90+selectedItem->rotation()); scene->update(); } /** * @brief MainWindow::sceneScaleChanged * 响应视图缩放功能 * @param scale */ void MainWindow::sceneScaleChanged(const QString &scale) { double newScale = scale.left(scale.indexOf(tr("%"))).toDouble() / 100.0; QMatrix oldMatrix = ui->view->matrix(); ui->view->resetMatrix(); ui->view->translate(oldMatrix.dx(), oldMatrix.dy()); ui->view->scale(newScale, newScale); } /** * @brief MainWindow::on_aboutAction_triggered * 显示关于对话框 */ void MainWindow::on_aboutAction_triggered() { QMessageBox::about(this, tr("About Diagram Scene"), tr("The <b>Diagram Scene</b> example shows " "use of the graphics framework.")); } /** * @brief MainWindow::on_lineEdit_textChanged * 实现图元搜索功能 * @param arg1 */ void MainWindow::on_lineEdit_textChanged(const QString &arg1) { auto keys = map_name_widget.keys(); foreach( auto key, keys ){ if( key.contains( arg1, Qt::CaseInsensitive ) ){ map_name_widget.value(key)->show(); } else map_name_widget.value(key)->hide(); if( arg1.isEmpty() ) map_name_widget.value(key)->show(); } QGridLayout *layout = ui->gridLayout_2; int r = 1; int c = 0; foreach( auto w, map_name_widget.values() ){ if( w->isHidden() ) layout->removeWidget( w ); else{ layout->addWidget( w, r, c ); if( ++c>=2 ){ c=0; ++r; } } } } /** * @brief MainWindow::createToolBox * 创建左侧工具栏 */ void MainWindow::createToolBox() { buttonGroup = new QButtonGrou