QT-DrawingApp图标绘制工具

#include "MainWindow.hpp" #include "ui_mainwindow.h" #include "Canvas.hpp" #include "Group.hpp" #include "DrawDialogFactory.hpp" #include "Circle.hpp" #include "Rectangle.hpp" #include "Line.hpp" #include "SelectionTool.hpp" #include "DrawCircleTool.hpp" #include "DrawRectangleTool.hpp" #include "DrawLineTool.hpp" #include "PropertyColorButton.hpp" #include "PropertySpinBox.hpp" #include "GlobalDrawProperties.hpp" #include "MainCommandStack.hpp" #include "ActiveSelection.hpp" #include "DrawCommand.hpp" #include "DeleteSelectedCommand.hpp" #include "SendBackwardCommand.hpp" #include "BringForwardCommand.hpp" #include "BringToFrontCommand.hpp" #include "SendToBackCommand.hpp" #include "FileReaderFactory.hpp" #include "FileWriterFactory.hpp" #include <QMessageBox> #include <QFileDialog> #include <QCloseEvent> #include <QFileInfo> #include <cassert> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), m_appName("Drawing App"), m_canvasFile("Untitled"), m_appStackIdx(-1), m_isFileSet(false), ui(new Ui::MainWindow) { ui->setupUi(this); m_canvas = new Canvas(this); m_gp = &GlobalDrawProperties::getInstance(); m_mcs = &MainCommandStack::getInstance(); m_mcs->getCurrentIndexChangedSignal() ->connect([=](int){ mainCommandStackHasChanged(); }); m_selectionTool = std::unique_ptr<SelectionTool> (new SelectionTool(m_canvas)); m_drawCircleTool = std::unique_ptr<DrawCircleTool> (new DrawCircleTool(m_canvas)); m_drawRectangleTool = std::unique_ptr<DrawRectangleTool> (new DrawRectangleTool(m_canvas)); m_drawLineTool = std::unique_ptr<DrawLineTool> (new DrawLineTool(m_canvas)); m_canvas->setActiveTool(m_selectionTool.get()); PropertyColorButton *fillColorBtn = new PropertyColorButton(this, getCanvas(), QColor(200, 200, 200)); PropertyColorButton *lineColorBtn = new PropertyColorButton(this, getCanvas(), QColor(0, 0, 0)); PropertySpinBox *thicknessSpinBox = new PropertySpinBox(this, getCanvas(), 2); m_gp->setup(fillColorBtn, lineColorBtn, thicknessSpinBox); ui->VEProp->addRow("Fill Color", fillColorBtn); ui->VEProp->addRow("Line Color", lineColorBtn); ui->VEProp->addRow("Line Thickness", thicknessSpinBox); setCentralWidget(m_canvas); this->setWindowTitle(getTitle()); } Canvas *MainWindow::getCanvas() { return m_canvas; } void MainWindow::setActiveTool(Tool *tool) { m_activeTool = tool; m_canvas->setActiveTool(tool); } bool MainWindow::isDirty() const { return (m_mcs->getCurrentIdx() != m_appStackIdx); } bool MainWindow::promptUnsavedWork() { if (isDirty()) { auto answer = QMessageBox::question(this, "Save your current work?", "Looks like you left a masterpiece behind. Do you want to save it?", QMessageBox::StandardButtons(QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel)); if (answer == QMessageBox::Yes) { on_actionSave_triggered(); if (isDirty()) return false; } else if (answer == QMessageBox::Cancel) { return false; } } return true; } void MainWindow::saveFile() { QString ext = QFileInfo(m_canvasFile).suffix(); IFileWriter *writer = FileWriterFactory::create(ext.toStdString()); assert(writer != nullptr); writer->setup(m_canvas->getMainGroup()); if (writer->write(m_canvasFile.toStdString())) { ui->statusBar->showMessage(QString("Saved file: \"%1\"").arg(m_canvasFile)); } else { QMessageBox::critical(this, "File Write Error", "I can't write to this file. Does it exist, and if so do you give me access to write to it?"); delete writer; return; } setCommandStackIdx(m_mcs->getCurrentIdx()); mainCommandStackHasChanged(); delete writer; } void MainWindow::setCommandStackIdx(int val) { m_appStackIdx = val; } void MainWindow::mainCommandStackHasChanged() { QString title = getTitle(); if (isDirty()) { title += "*"; } this->setWindowTitle(title); } QString MainWindow::getTitle() const { return QString("%1 - %2").arg(m_appName, m_canvasFile); } MainWindow::~MainWindow() { delete ui; delete m_canvas; } void MainWindow::on_actionCircle_triggered() { Circle *c = new Circle(); m_canvas->addVisualEntity(c); DrawDialog *d = DrawDialogFactory::CreateDrawDialog(this, c); d->exec(); delete d; ActiveSelection::getInstance().deselectAll(); c->setSelected(true); DrawCommand *comm = new DrawCommand(c); comm->addtoCommandStack(); } void MainWindow::on_actionRectangle_triggered() { Rectangle *r = new Rectangle(); m_canvas->addVisualEntity(r); DrawDialog *d = DrawDialogFactory::CreateDrawDialog(this, r); d->exec(); delete d; ActiveSelection::getInstance().deselectAll(); r->setSelected(true); DrawCommand *comm = new DrawCommand(r); comm->addtoCommandStack(); } void MainWindow::on_actionLine_triggered() { Line *l = new Line(); m_canvas->addVisualEntity(l); DrawDialog *d = DrawDialogFactory::CreateDrawDialog(this, l); d->exec(); delete d; ActiveSelection::getInstance().deselectAll(); l->setSelected(true); DrawCommand *comm = new DrawCommand(l); comm->addtoCommandStack(); } void MainWindow::on_actionSelectionTool_triggered() { uncheckAllToolbar(); ui->actionSelectionTool->setChecked(true); setActiveTool(m_selectionTool.get()); } void MainWindow::uncheckAllToolbar() { ui->actionDrawLine->setChecked(false); ui->actionDrawCircle->setChecked(false); ui->actionDrawRectangle->setChecked(false); ui->actionSelectionTool->setChecked(false); } void MainWindow::resetCommandStack() { m_mcs->clear(); setCommandStackIdx(-1); mainCommandStackHasChanged(); } QString MainWindow::getCanvasFile() const { return m_canvasFile; } void MainWindow::setCanvasFile(const QString &value) { m_canvasFile = value; m_isFileSet = true; } void MainWindow::closeEvent(QCloseEvent *event) { if (!promptUnsavedWork()) { event->ignore(); } } void MainWindow::on_actionDrawCircle_triggered() { uncheckAllToolbar(); ui->actionDrawCircle->setChecked(true); setActiveTool(m_drawCircleTool.get()); } void MainWindow::on_actionDrawRectangle_triggered() { uncheckAllToolbar(); ui->actionDrawRectangle->setChecked(true); setActiveTool(m_drawRectangleTool.get()); } void MainWindow::on_actionDrawLine_triggered() { uncheckAllToolbar(); ui->actionDrawLine->setChecked(true); setActiveTool(m_drawLineTool.get()); } void MainWindow::on_actionUndo_triggered() { m_mcs->undo(); m_canvas->repaint(); } void MainWindow::on_actionRedo_triggered() { m_mcs->redo(); m_canvas->repaint(); } void MainWindow::on_actionDelete_triggered() { if (ActiveSelection::getInstance().getSize() == 0) return; DeleteSelectedCommand *dsc = new DeleteSelectedCommand(); dsc->execute(); dsc->addtoCommandStack(); m_canvas->repaint(); } void MainWindow::on_actionSend_Backward_triggered() { if (!ChangeOrderCommand::canChangeOrder()) return; SendBackwardCommand *comm = new SendBackwardCommand(); comm->execute(); comm->addtoCommandStack(); m_canvas->repaint(); } void MainWindow::on_actionBring_Forward_triggered() { if (!ChangeOrderCommand::canChangeOrder()) return; BringForwardCommand *comm = new BringForwardCommand(); comm->execute(); comm->addtoCommandStack(); m_canvas->repaint(); } void MainWindow::on_actionBring_To_Front_triggered() { if (!ChangeOrderCommand::canChangeOrder()) return; BringToFrontCommand *comm = new BringToFrontCommand();