上海大学计算机图形学实验（Qt版）

#include "mypaint.h" #include<QPushButton> #include<QWidget> #include<math.h> MyPaint::MyPaint(QWidget *parent) : QMainWindow(parent) , m_curvePen(Qt::black) , m_dragging(false) { m_curvePen.setWidth(2); m_colors[0] = Qt::green; m_colors[1] = Qt::red; m_colors[2] = Qt::blue; m_colors[3] = Qt::green; for (int i = 0; i < NUM_POINTS; i++) { m_pens[i] = QPen(m_colors[i]); m_brushes[i] = QBrush(m_colors[i]); } m_points[StartPoint] = QPointF(200, height() - 20); m_points[ControlPoint1] = QPointF(width() - 20, height() - 20); m_points[ControlPoint2] = QPointF(200, 60); m_points[EndPoint] = QPointF(width() - 20, 60); _lpress = false;//初始鼠标左键未按下 _drawType = 0;//初始为什么都不画 _drag = 0;//默认非拖拽模式 _begin = pos();//拖拽的参考坐标，方便计算位移 _openflag = 0;//初始不打开图片 this->setGeometry(250,200,960,720);//设置窗体大小、位置 setMouseTracking(true);//开启鼠标实时追踪，监听鼠标移动事件，默认只有按下时才监听 //设置背景颜色 this->setStyleSheet("background-color:white;"); //创建工具栏 QToolBar *tbar = addToolBar(tr("工具栏")); tbar->setMovable(false);//工具栏不可移动 tbar->setIconSize(QSize(20, 20));//设置动作图标的尺寸 tbar->setStyleSheet("background-color:rgb(155,155,155)");//背景色 _Rmenu = new QMenu(this);//创建右键菜单 _Rmenu->addAction(tr("保存 \tCtrl+S"), this, SLOT(SavePic()));//添加菜单动作 _Rmenu->addAction(tr("退出 \tALT+F4"), this, SLOT(close()));//添加菜单动作 _Rmenu->setStyleSheet("background-color:rgb(199,237,204)");//设置背景色 QAction *openAction = new QAction(tr("&打开"), this);//打开动作 openAction->setIcon(QIcon(":/png/images/open.png"));//图标 openAction->setShortcut(QKeySequence(tr("Ctrl+O")));//热键 tbar->addAction(openAction);//添加到工具栏 QAction *saveAction = new QAction(tr("&保存"), this);//保存动作 saveAction->setIcon(QIcon(":/png/images/save.png"));//图标 saveAction->setShortcut(QKeySequence(tr("Ctrl+S")));//热键 tbar->addAction(saveAction);//添加到工具栏 QAction *lineAction = new QAction(tr("&DDA"), this);//直线动作 lineAction->setIcon(QIcon(":/png/images/dda.png"));//图标 lineAction->setShortcut(QKeySequence(tr("Ctrl+L")));//热键 tbar->addAction(lineAction);//添加到工具栏 QAction *lineAction1 = new QAction(tr("&中点"), this);//直线动作 lineAction1->setIcon(QIcon(":/png/images/中点.png"));//图标 lineAction1->setShortcut(QKeySequence(tr("Ctrl+L")));//热键 tbar->addAction(lineAction1);//添加到工具栏 QAction *lineAction2 = new QAction(tr("&Bresenham"), this);//直线动作 lineAction2->setIcon(QIcon(":/png/images/bresenham.png"));//图标 lineAction2->setShortcut(QKeySequence(tr("Ctrl+L")));//热键 tbar->addAction(lineAction2);//添加到工具栏 QAction *rectAction = new QAction(tr("&矩形"), this);//矩形动作 rectAction->setIcon(QIcon(":/png/images/rect.png"));//图标 rectAction->setShortcut(QKeySequence(tr("Ctrl+R")));//热键 tbar->addAction(rectAction); QAction *ellipseAction = new QAction(tr("&椭圆"), this);//椭圆动作 ellipseAction->setIcon(QIcon(":/png/images/ellipse.png"));//图标 ellipseAction->setShortcut(QKeySequence(tr("Ctrl+E")));//热键 tbar->addAction(ellipseAction); QAction *typeAction = new QAction(tr("&线宽"), this);//文字动作 typeAction->setIcon(QIcon(":/png/images/线宽3.png"));//图标 typeAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(typeAction); QAction *type5Action = new QAction(tr("&线宽"), this);//文字动作 type5Action->setIcon(QIcon(":/png/images/线宽5.png"));//图标 type5Action->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(type5Action); QAction *type7Action = new QAction(tr("&线宽"), this);//文字动作 type7Action->setIcon(QIcon(":/png/images/线宽7.png"));//图标 type7Action->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(type7Action); QAction *colorAction = new QAction(tr("&颜色"), this);//文字动作 colorAction->setIcon(QIcon(":/png/images/红色.png"));//图标 colorAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(colorAction); QAction *color1Action = new QAction(tr("&颜色"), this);//文字动作 color1Action->setIcon(QIcon(":/png/images/绿色.png"));//图标 color1Action->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(color1Action); QAction *color2Action = new QAction(tr("&颜色"), this);//文字动作 color2Action->setIcon(QIcon(":/png/images/蓝色.png"));//图标 color2Action->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(color2Action); QAction *polygonAction = new QAction(tr("&扫描转换"), this);//扫描转换 polygonAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 polygonAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(polygonAction); QAction *seedAction = new QAction(tr("&种子填充"), this);//种子填充 seedAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 seedAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(seedAction); QAction *cutAction = new QAction(tr("裁剪"), this);//种子填充 cutAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 cutAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(cutAction); QAction *moveAction = new QAction(tr("平移"), this);//种子填充 moveAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 moveAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(moveAction); QAction *setcenterAction = new QAction(tr("设置中心点"), this);//种子填充 setcenterAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 setcenterAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(setcenterAction); QAction *scaleAction = new QAction(tr("缩放"), this);//种子填充 scaleAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 scaleAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(scaleAction); QAction *rotateAction = new QAction(tr("旋转"), this);//种子填充 rotateAction->setIcon(QIcon(":/png/images/蓝色.png"));//图标 rotateAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(rotateAction); QAction *bezierAction = new QAction(tr("贝塞尔"), this);//种子填充 bezierAction->setIcon(QIcon(":/png/images/rect.png"));//图标 bezierAction->setShortcut(QKeySequence(tr("Ctrl+T")));//热键 tbar->addAction(bezierAction); //连接信号与槽函数 connect(ellipseAction, SIGNAL(triggered()), this, SLOT(Ellipses())); connect(lineAction, SIGNAL(triggered()), this, SLOT(Line())); connect(lineAction1, SIGNAL(triggered()), this, SLOT(Line1())); connect(lineAction2, SIGNAL(triggered()), this, SLOT(Line2())); connect(rectAction, SIGNAL(triggered()), this, SLOT(Rects())); connect(saveAction, SIGNAL(triggered()), this, SLOT(SavePic())); connect(openAction, SIGNAL(triggered()), this, SLOT(OpenPic())); connect(typeAction, SIGNAL(triggered()), this, SLOT(LineType())); connect(type5Action, SIGNAL(triggered()), this, SLOT(LineType5())); connect(type7Action, SIGNAL(triggered()), this, SLOT(LineType7())); connect(colorAction, SIGNAL(triggered()), this, SLOT(ColorType())); connect(color1Action, SIGNAL(triggered()), this, SLOT(ColorType1())); connect(color2Action, SIGNAL(triggered()), this, SLOT(ColorType2())); connect(polygonAction, SIGN