Qt基于QGraphicsView绘图架构实现不同图形（多边形、圆形、矩形）的动态绘制（所见即所得）

/**************************************************************************** ** Meta object code from reading C++ file 'widget.h' ** ** Created by: The Qt Meta Object Compiler version 67 (Qt 5.9.2) ** ** WARNING! All changes made in this file will be lost! *****************************************************************************/ #include "../widget.h" #include <QtCore/qbytearray.h> #include <QtCore/qmetatype.h> #if !defined(Q_MOC_OUTPUT_REVISION) #error "The header file 'widget.h' doesn't include <QObject>." #elif Q_MOC_OUTPUT_REVISION != 67 #error "This file was generated using the moc from 5.9.2. It" #error "cannot be used with the include files from this version of Qt." #error "(The moc has changed too much.)" #endif QT_BEGIN_MOC_NAMESPACE QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED struct qt_meta_stringdata_Widget_t { QByteArrayData data[7]; char stringdata0[134]; }; #define QT_MOC_LITERAL(idx, ofs, len) \ Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER_WITH_OFFSET(len, \ qptrdiff(offsetof(qt_meta_stringdata_Widget_t, stringdata0) + ofs \ - idx * sizeof(QByteArrayData)) \ ) static const qt_meta_stringdata_Widget_t qt_meta_stringdata_Widget = { { QT_MOC_LITERAL(0, 0, 6), // "Widget" QT_MOC_LITERAL(1, 7, 28), // "on_pushButtonPolygon_clicked" QT_MOC_LITERAL(2, 36, 0), // "" QT_MOC_LITERAL(3, 37, 27), // "on_pushButtonCircle_clicked" QT_MOC_LITERAL(4, 65, 30), // "on_pushButtonRectangle_clicked" QT_MOC_LITERAL(5, 96, 26), // "on_pushButtonClear_clicked" QT_MOC_LITERAL(6, 123, 10) // "slt_noDraw" }, "Widget\0on_pushButtonPolygon_clicked\0" "\0on_pushButtonCircle_clicked\0" "on_pushButtonRectangle_clicked\0" "on_pushButtonClear_clicked\0slt_noDraw" }; #undef QT_MOC_LITERAL static const uint qt_meta_data_Widget[] = { // content: 7, // revision 0, // classname 0, 0, // classinfo 5, 14, // methods 0, 0, // properties 0, 0, // enums/sets 0, 0, // constructors 0, // flags 0, // signalCount // slots: name, argc, parameters, tag, flags 1, 0, 39, 2, 0x08 /* Private */, 3, 0, 40, 2, 0x08 /* Private */, 4, 0, 41, 2, 0x08 /* Private */, 5, 0, 42, 2, 0x08 /* Private */, 6, 0, 43, 2, 0x0a /* Public */, // slots: parameters QMetaType::Void, QMetaType::Void, QMetaType::Void, QMetaType::Void, QMetaType::Void, 0 // eod }; void Widget::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a) { if (_c == QMetaObject::InvokeMetaMethod) { Widget *_t = static_cast<Widget *>(_o); Q_UNUSED(_t) switch (_id) { case 0: _t->on_pushButtonPolygon_clicked(); break; case 1: _t->on_pushButtonCircle_clicked(); break; case 2: _t->on_pushButtonRectangle_clicked(); break; case 3: _t->on_pushButtonClear_clicked(); break; case 4: _t->slt_noDraw(); break; default: ; } } Q_UNUSED(_a); } const QMetaObject Widget::staticMetaObject = { { &QWidget::staticMetaObject, qt_meta_stringdata_Widget.data, qt_meta_data_Widget, qt_static_metacall, nullptr, nullptr} }; const QMetaObject *Widget::metaObject() const { return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject; } void *Widget::qt_metacast(const char *_clname) { if (!_clname) return nullptr; if (!strcmp(_clname, qt_meta_stringdata_Widget.stringdata0)) return static_cast<void*>(this); return QWidget::qt_metacast(_clname); } int Widget::qt_metacall(QMetaObject::Call _c, int _id, void **_a) { _id = QWidget::qt_metacall(_c, _id, _a); if (_id < 0) return _id; if (_c == QMetaObject::InvokeMetaMethod) { if (_id < 5) qt_static_metacall(this, _c, _id, _a); _id -= 5; } else if (_c == QMetaObject::RegisterMethodArgumentMetaType) { if (_id < 5) *reinterpret_cast<int*>(_a[0]) = -1; _id -= 5; } return _id; } QT_WARNING_POP QT_END_MOC_NAMESPACE