Text的完成

FourthOne/vector-editor_changed/vector-editor_changed/VectorEditor.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.0.0, 2018-07-11T20:18:23. -->
+<!-- Written by QtCreator 3.0.0, 2018-07-11T22:03:08. -->
 <qtcreator>
  <data>
   <variable>ProjectExplorer.Project.ActiveTarget</variable>

FourthOne/vector-editor_changed/vector-editor_changed/src/TextItem.cpp

@@ -0,0 +1,121 @@
+#include "TextItem.h"
+#include <QFont>
+#include <QPainter>
+#include <QCursor>
+#include <QKeyEvent>
+#include <QGraphicsSceneHoverEvent>
+#include <QGraphicsSceneContextMenuEvent>
+#include <QMenu>
+#include <QTextBlockFormat>
+
+TextItem::TextItem(QObject *parent) :
+    QObject(parent)
+{
+    setFlag(QGraphicsItem::ItemIsFocusable);
+    setFlag(QGraphicsItem::ItemIsMovable);
+
+    QTextBlockFormat format;
+    format.setAlignment(Qt::AlignCenter);
+    //出现窗口，获得字体
+    if(td.exec() == QDialog::Accepted)
+    {
+        tFont = td.getFont();
+        tWeight = td.getWidth();
+        myWidth = td.getKWidth();//文本框宽度
+    }
+    //尺寸
+    adjust = 20;
+    myFont.setFamily(tFont);
+    myFont.setPointSize(tWeight);
+    //文本项
+    text_item = new QGraphicsTextItem(this);
+    text_item->setTextWidth(myWidth);
+    text_item->setFont(myFont);
+    text_item->setTextInteractionFlags(Qt::TextEditorInteraction);
+    text_interaction = true;
+    text_item->setPlainText("请在这里编辑^_^");
+    text_rect = text_item->boundingRect();
+    text_item->setPos(520, 520);
+    //矩形框
+    rect_item = new QGraphicsRectItem(this);
+    QPen *pen = new QPen(Qt::lightGray);
+    rect_item->setPen(*pen);
+    rect_item->setRect(500, 500,
+                       text_rect.width() + 3*adjust,
+                       text_rect.height() + 3*adjust);
+
+
+};
+
+TextItem::~TextItem()
+{
+    delete text_item;
+    delete rect_item;
+}
+
+QRectF TextItem::boundingRect(void) const //初始化长方形的位置，大小
+{
+    rect_item->setRect(500, 500,
+                       text_rect.width() + 2*adjust,
+                       text_rect.height() + 2*adjust);
+    return rect_item->boundingRect();
+}
+void TextItem::paint(QPainter *painter,
+                     const QStyleOptionGraphicsItem *option,
+                     QWidget *widget)
+{
+    Q_UNUSED(painter);
+    Q_UNUSED(option);
+}
+
+void TextItem::keyPressEvent(QKeyEvent *event)
+{
+    QGraphicsItem::keyPressEvent(event);
+}
+void TextItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+    //setFocus();
+    QGraphicsItem::mousePressEvent(event);
+}
+void TextItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
+{
+    setCursor(Qt::OpenHandCursor);
+}
+void TextItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
+{
+    setCursor(Qt::ArrowCursor);
+}
+void TextItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
+{
+    QGraphicsItem::mouseMoveEvent(event);
+}
+
+void TextItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
+{
+    QMenu menu; //显示文本和图标，但是不执行操作
+    QAction *edit_action = menu.addAction("编辑开关");
+    QAction *selected_action = menu.exec(event->screenPos());
+    if(selected_action == edit_action){
+        if(text_interaction){
+            text_item->setTextInteractionFlags(Qt::NoTextInteraction);
+            text_interaction = false;
+            reset_text_rect();
+            update(); //每次编辑完都更新
+        }else{
+            text_item->setTextInteractionFlags(Qt::TextEditorInteraction);//可编辑
+            text_interaction = true;
+        }
+    }
+}
+
+void TextItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
+{
+    setFocus();
+    QGraphicsItem::mouseDoubleClickEvent(event);
+}
+void TextItem::reset_text_rect(void)
+{
+    text_rect = text_item->boundingRect();
+}
+
+

FourthOne/vector-editor_changed/vector-editor_changed/src/TextItem.h

@@ -0,0 +1,58 @@
+#ifndef TEXTITEM_H
+#define TEXTITEM_H
+#include <QCursor>
+#include <QGraphicsItem>
+#include <QGraphicsTextItem>
+#include <QGraphicsRectItem>
+#include <QGraphicsTextItem>
+#include <QGraphicsSceneEvent>
+#include <QObject>
+#include <QFont>
+#include "textdialog.h"
+
+class TextItem : public QObject, public QGraphicsItem
+{
+    Q_OBJECT
+public:
+    explicit TextItem(QObject *parent = 0);
+    virtual ~TextItem();
+    QRectF boundingRect(void) const;
+    //虚函数，不用但需存在
+    void paint(QPainter *painter,
+               const QStyleOptionGraphicsItem *option,
+               QWidget *widget);
+
+private:
+    QGraphicsTextItem *text_item;
+    QGraphicsRectItem *rect_item;
+    bool text_interaction; //可编辑状态
+
+    QString tFont;//字体： 黑体等
+    QFont myFont; //字体
+    int tWeight;//字宽
+    qreal myWidth; //文本框的宽度
+    qreal adjust; //距离调整
+    QRectF text_rect; //文本的边框
+
+    void reset_text_rect(void); //重新设置文本边框的函数
+
+    TextDialog td; //出现窗口，设置字体
+
+
+
+protected:
+    void keyPressEvent(QKeyEvent *event);
+    void mousePressEvent(QGraphicsSceneMouseEvent *event);
+    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+    void hoverLeaveEvent (QGraphicsSceneHoverEvent * event);
+    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
+    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent * event);
+
+signals:
+
+public slots:
+
+};
+
+#endif // TEXTITEM_H

FourthOne/vector-editor_changed/vector-editor_changed/src/debug/moc_TextItem.cpp

@@ -0,0 +1,90 @@
+/****************************************************************************
+** Meta object code from reading C++ file 'TextItem.h'
+**
+** Created by: The Qt Meta Object Compiler version 67 (Qt 5.2.0)
+**
+** WARNING! All changes made in this file will be lost!
+*****************************************************************************/
+
+#include "../TextItem.h"
+#include <QtCore/qbytearray.h>
+#include <QtCore/qmetatype.h>
+#if !defined(Q_MOC_OUTPUT_REVISION)
+#error "The header file 'TextItem.h' doesn't include <QObject>."
+#elif Q_MOC_OUTPUT_REVISION != 67
+#error "This file was generated using the moc from 5.2.0. 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
+struct qt_meta_stringdata_TextItem_t {
+    QByteArrayData data[1];
+    char stringdata[10];
+};
+#define QT_MOC_LITERAL(idx, ofs, len) \
+    Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER_WITH_OFFSET(len, \
+    offsetof(qt_meta_stringdata_TextItem_t, stringdata) + ofs \
+        - idx * sizeof(QByteArrayData) \
+    )
+static const qt_meta_stringdata_TextItem_t qt_meta_stringdata_TextItem = {
+    {
+QT_MOC_LITERAL(0, 0, 8)
+    },
+    "TextItem\0"
+};
+#undef QT_MOC_LITERAL
+
+static const uint qt_meta_data_TextItem[] = {
+
+ // content:
+       7,       // revision
+       0,       // classname
+       0,    0, // classinfo
+       0,    0, // methods
+       0,    0, // properties
+       0,    0, // enums/sets
+       0,    0, // constructors
+       0,       // flags
+       0,       // signalCount
+
+       0        // eod
+};
+
+void TextItem::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
+{
+    Q_UNUSED(_o);
+    Q_UNUSED(_id);
+    Q_UNUSED(_c);
+    Q_UNUSED(_a);
+}
+
+const QMetaObject TextItem::staticMetaObject = {
+    { &QObject::staticMetaObject, qt_meta_stringdata_TextItem.data,
+      qt_meta_data_TextItem,  qt_static_metacall, 0, 0}
+};
+
+
+const QMetaObject *TextItem::metaObject() const
+{
+    return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
+}
+
+void *TextItem::qt_metacast(const char *_clname)
+{
+    if (!_clname) return 0;
+    if (!strcmp(_clname, qt_meta_stringdata_TextItem.stringdata))
+        return static_cast<void*>(const_cast< TextItem*>(this));
+    if (!strcmp(_clname, "QGraphicsItem"))
+        return static_cast< QGraphicsItem*>(const_cast< TextItem*>(this));
+    return QObject::qt_metacast(_clname);
+}
+
+int TextItem::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
+{
+    _id = QObject::qt_metacall(_c, _id, _a);
+    if (_id < 0)
+        return _id;
+    return _id;
+}
+QT_END_MOC_NAMESPACE

FourthOne/vector-editor_changed/vector-editor_changed/src/debug/moc_mainwindow.cpp

@@ -212,6 +212,24 @@ void MainWindow::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id,
         case 31: _t->on_actionHelp_triggered(); break;
         default: ;
         }
+    } else if (_c == QMetaObject::RegisterMethodArgumentMetaType) {
+        switch (_id) {
+        default: *reinterpret_cast<int*>(_a[0]) = -1; break;
+        case 4:
+            switch (*reinterpret_cast<int*>(_a[1])) {
+            default: *reinterpret_cast<int*>(_a[0]) = -1; break;
+            case 0:
+                *reinterpret_cast<int*>(_a[0]) = qRegisterMetaType< QGraphicsItem* >(); break;
+            }
+            break;
+        case 5:
+            switch (*reinterpret_cast<int*>(_a[1])) {
+            default: *reinterpret_cast<int*>(_a[0]) = -1; break;
+            case 0:
+                *reinterpret_cast<int*>(_a[0]) = qRegisterMetaType< QGraphicsItem* >(); break;
+            }
+            break;
+        }
     }
 }
 
@@ -245,7 +263,7 @@ int MainWindow::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
         _id -= 32;
     } else if (_c == QMetaObject::RegisterMethodArgumentMetaType) {
         if (_id < 32)
-            *reinterpret_cast<int*>(_a[0]) = -1;
+            qt_static_metacall(this, _c, _id, _a);
         _id -= 32;
     }
     return _id;