qt5的qk2dview

1、头文件(.h)

1.1 boardlayer.h

#ifndef BOARDLAYER_H
#define BOARDLAYER_H#include "qk2dview.h"
#include <QImage>class BoardLayer : public Qk2dViewLayer
{public:BoardLayer();const QImage& image() const { return m_image; }QTransform imageToWorld() const { return m_imgToWorld; }QTransform worldToImage() const { return m_worldToImg; }private:void draw_ex(QPainter &painter) override;void calcTransform();private:QImage m_image;QPointF m_origin;double m_pixelSize;QRectF m_worldRect; // image rect in world coordinateQTransform m_imgToWorld; // convert image coordinate to world coordinateQTransform m_worldToImg; // convert world coordinate to image coordinate
};#endif // BOARDLAYER_H

1.2 component.h

#ifndef COMPONENT_H
#define COMPONENT_H#include <QPointF>
#include <QSizeF>
#include <vector>struct Component
{Component(const QPointF &center, const QSizeF &size, float angle = 0): m_pos(center), m_size(size), m_angle(angle), m_unitVecX(), m_unitVecY(), m_vertex(), m_selected(false){calcVertex();}void calcVertex();bool contains(const QPointF &point);QPointF m_pos;QSizeF m_size;float m_angle;QPointF m_unitVecX;QPointF m_unitVecY;QPointF m_vertex[8];bool m_selected;
};extern std::vector<Component> g_m_components;#endif // COMPONENT_H

1.3 componentlayer.h

#ifndef COMPONENTLAYER_H
#define COMPONENTLAYER_H#include "qk2dview.h"
#include "component.h"class ComponentLayer : public Qk2dViewLayer
{public:ComponentLayer();void mousePressEvent(QMouseEvent *event) override;void mouseReleaseEvent(QMouseEvent *event) override;void mouseMoveEvent(QMouseEvent *event) override;void mouseDoubleClickEvent(QMouseEvent *event) override;private:void draw_ex(QPainter &painter) override;private:Component* m_component;int m_hitVertex;
};#endif // COMPONENTLAYER_H

1.4 qk2dview.h

#ifndef QK2DVIEW_H
#define QK2DVIEW_H#include <QWidget>
#include <QPainter>
#include <QTransform>
#include <QMouseEvent>#include <memory>
#include <array>class Qk2dViewLayer;class Qk2dView : public QWidget
{Q_OBJECTpublic:enum Layer{BoardLayer = 0,RecipeLayer,ComponentLayer,AlgorithmLayer,ResultLayer,};explicit Qk2dView(QWidget *parent = nullptr);void setRoiRect(const QRectF &roi);void setDrawer(Layer layer, std::shared_ptr<Qk2dViewLayer> drawer);std::shared_ptr<Qk2dViewLayer> getDrawer(Layer layer);void setDrawerVisiable(Layer layer, bool visiable);const QTransform& winToWorld() const { return m_winToWorld; }const QTransform& worldToWin() const { return m_worldToWin; }protected:void mousePressEvent(QMouseEvent *event) override;void mouseReleaseEvent(QMouseEvent *event) override;void mouseMoveEvent(QMouseEvent *event) override;void mouseDoubleClickEvent(QMouseEvent *event) override;void paintEvent(QPaintEvent *event) override;void wheelEvent(QWheelEvent *event) override;void resizeEvent(QResizeEvent *event) override;private:void calcTransform();private:static const int m_numOfLayers = ResultLayer+1;std::array<std::shared_ptr<Qk2dViewLayer>, m_numOfLayers> m_layers;QRectF m_roiRect; // visiable area in world coordinateQTransform m_winToWorld;QTransform m_worldToWin;bool m_isDragging;QPointF m_dragStartPos;
};class Qk2dViewLayer
{public:Qk2dViewLayer();void setView(Qk2dView *view);void setVisiable(bool visiable);bool visiable() const;void draw(QPainter &painter);virtual void mousePressEvent(QMouseEvent */*event*/) {}virtual void mouseReleaseEvent(QMouseEvent */*event*/) {}virtual void mouseMoveEvent(QMouseEvent */*event*/) {}virtual void mouseDoubleClickEvent(QMouseEvent */*event*/) {}protected:virtual void draw_ex(QPainter &painter) = 0;Qk2dView *m_view;bool m_visiable;
};#endif // QK2DVIEW_H

1.5 recipelayer.h

#ifndef RECIPELAYER_H
#define RECIPELAYER_H#include "qk2dview.h"class RecipeLayer : public Qk2dViewLayer
{public:RecipeLayer();void mousePressEvent(QMouseEvent *event) override;void mouseReleaseEvent(QMouseEvent *event) override;void mouseMoveEvent(QMouseEvent *event) override;private:void draw_ex(QPainter &painter) override;private:bool m_selecting;QPointF m_selectStartPos;QPointF m_selectEndPos;
};#endif // RECIPELAYER_H

1.6 resultlayer.h

#ifndef RESULTLAYER_H
#define RESULTLAYER_H#include "qk2dview.h"class ResultLayer : public Qk2dViewLayer
{public:ResultLayer();void setText(const QString& text, bool status);private:void draw_ex(QPainter &painter) override;private:QString m_text;bool m_status;
};#endif // RESULTLAYER_H

1.7 mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>
#include "qk2dview.h"QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();private:Ui::MainWindow *ui;Qk2dView m_view;
};
#endif // MAINWINDOW_H

2、 .cpp文件

2.1 boardlayer.cpp

#include "boardlayer.h"
#include <QPointF>
#include <QPainter>
#include <QDebug>BoardLayer::BoardLayer(): Qk2dViewLayer()// , m_image("D:/3d_images/full_board_1/origin.jpg"), m_image("D:/image/N.jpg"), m_origin(650, 50) // origin at (650, 50), m_pixelSize(0.03) // 30 um / pixel, m_worldRect(), m_imgToWorld(), m_worldToImg()
{calcTransform();
}void BoardLayer::draw_ex(QPainter &painter)
{QRectF rect = m_view->worldToWin().mapRect(m_worldRect);painter.drawImage(rect, m_image);
}void BoardLayer::calcTransform()
{double trans_x = m_origin.x() - m_image.width()*m_pixelSize;double trans_y = m_origin.y() + m_image.height()*m_pixelSize;m_imgToWorld = QTransform::fromScale(m_pixelSize, -m_pixelSize);m_imgToWorld *= QTransform::fromTranslate(trans_x, trans_y);m_worldToImg = m_imgToWorld.inverted();m_worldRect = m_imgToWorld.mapRect(m_image.rect()).normalized();
}

2.2 component.cpp

#include "component.h"const static double PI = 3.1415926;std::vector<Component> g_m_components = {Component(QPointF(393.5, 198), QSizeF(33, 33), 45),Component(QPointF(562.5, 198), QSizeF(33, 33)),Component(QPointF(398.5, 140), QSizeF(23, 23), 120),Component(QPointF(567, 140), QSizeF(23, 23))
};void Component::calcVertex()
{double radAngle = m_angle * PI / 180;m_unitVecX = QPointF(cos(radAngle), sin(radAngle));m_unitVecY = QPointF(-sin(radAngle), cos(radAngle));QPointF vecx = m_unitVecX*m_size.width()/2;QPointF vecY = m_unitVecY*m_size.height()/2;m_vertex[0] = m_pos - vecx - vecY;m_vertex[1] = m_pos - vecY;m_vertex[2] = m_pos + vecx - vecY;m_vertex[3] = m_pos + vecx;m_vertex[4] = m_pos + vecx + vecY;m_vertex[5] = m_pos + vecY;m_vertex[6] = m_pos - vecx + vecY;m_vertex[7] = m_pos - vecx;
}bool Component::contains(const QPointF &point)
{bool result(false);int i = 0, j = 3;for(; i < 4; j = i++){if(((m_vertex[2*i].y()>point.y()) != (m_vertex[2*j].y()>point.y())) &&(point.x() < (m_vertex[2*j].x()-m_vertex[2*i].x()) * (point.y()-m_vertex[2*i].y())/ (m_vertex[2*j].y()-m_vertex[2*i].y()) + m_vertex[2*i].x())){result = !result;}}return result;
}

2.3 componentlayer.cpp

#include "componentlayer.h"ComponentLayer::ComponentLayer(): m_component(), m_hitVertex(-1)
{}void ComponentLayer::mousePressEvent(QMouseEvent *event)
{if(m_component){event->accept();QPointF pos = m_view->winToWorld().map(event->localPos());// control points hit testm_hitVertex = -1;QPointF dist = pos - m_component->m_pos;if(fabs(dist.x()) <= 1 && fabs(dist.y()) <= 1){m_hitVertex = 8;return;}for(int i = 0; i < 8; ++i){QPointF dist = pos - m_component->m_vertex[i];if(fabs(dist.x()) <= 1 && fabs(dist.y()) <= 1){m_hitVertex = i;return; // hit one of the control posints}}}
}void ComponentLayer::mouseReleaseEvent(QMouseEvent *event)
{if(m_component) // clear ROI editing hit vertex{event->accept();if(m_hitVertex != -1){m_hitVertex = -1;}}
}void ComponentLayer::mouseMoveEvent(QMouseEvent *event)
{if(m_component) // editing component ROI{event->accept();if(m_hitVertex != -1){QPointF pos = m_view->winToWorld().map(event->localPos());QPointF vec = pos - m_component->m_pos;switch(m_hitVertex){case 0:case 2:case 4:case 6:{double width = fabs(QPointF::dotProduct(vec, m_component->m_unitVecX)) * 2;double height = fabs(QPointF::dotProduct(vec, m_component->m_unitVecY)) * 2;m_component->m_size.setWidth(width);m_component->m_size.setHeight(height);}break;case 1:case 5:{double height = fabs(QPointF::dotProduct(vec, m_component->m_unitVecY)) * 2;m_component->m_size.setHeight(height);}break;case 3:case 7:{double width = fabs(QPointF::dotProduct(vec, m_component->m_unitVecX)) * 2;m_component->m_size.setWidth(width);}break;case 8:{m_component->m_pos = pos;}break;}m_component->calcVertex();m_view->update();}}
}void ComponentLayer::mouseDoubleClickEvent(QMouseEvent *event)
{if(event->button() == Qt::LeftButton){QPointF pos = m_view->winToWorld().map(event->localPos());m_component = nullptr;for(auto & compnent : g_m_components){if(compnent.contains(pos)){m_component = &compnent;event->accept();break;}}m_view->update();}
}void ComponentLayer::draw_ex(QPainter &painter)
{if(m_component){QPen pen;pen.setWidth(2);pen.setCosmetic(true);pen.setColor(Qt::yellow);painter.setPen(pen);painter.setTransform(m_view->worldToWin());// draw roi rectpainter.drawLine(m_component->m_vertex[0], m_component->m_vertex[2]);painter.drawLine(m_component->m_vertex[2], m_component->m_vertex[4]);painter.drawLine(m_component->m_vertex[4], m_component->m_vertex[6]);painter.drawLine(m_component->m_vertex[6], m_component->m_vertex[0]);// draw polaritypainter.drawLine(m_component->m_vertex[1] + 0.3*(m_component->m_vertex[5] - m_component->m_vertex[1]),m_component->m_vertex[0] + 0.3*(m_component->m_vertex[2]-m_component->m_vertex[0]));painter.drawLine(m_component->m_vertex[1] + 0.3*(m_component->m_vertex[5] - m_component->m_vertex[1]),m_component->m_vertex[0] + 0.7*(m_component->m_vertex[2]-m_component->m_vertex[0]));painter.setBrush(Qt::yellow);for(int i = 0; i < 8; ++i){painter.drawEllipse(m_component->m_vertex[i], 0.5, 0.5);}painter.drawLine(m_component->m_pos-QPointF(0.5, 0), m_component->m_pos+QPointF(0.5, 0));painter.drawLine(m_component->m_pos-QPointF(0, 0.5), m_component->m_pos+QPointF(0, 0.5));}
}

2.4 qk2dview.cpp

#include "qk2dview.h"
#include <QWheelEvent>
#include <QPainter>
#include <QTransform>
#include <QDebug>Qk2dViewLayer::Qk2dViewLayer(): m_view(nullptr), m_visiable(true)
{}void Qk2dViewLayer::setView(Qk2dView *view)
{m_view = view;
}void Qk2dViewLayer::setVisiable(bool visiable)
{m_visiable = visiable;
}bool Qk2dViewLayer::visiable() const
{return m_visiable;
}void Qk2dViewLayer::draw(QPainter &painter)
{painter.save();draw_ex(painter);painter.restore();
}Qk2dView::Qk2dView(QWidget *parent): QWidget(parent), m_layers(), m_roiRect(), m_winToWorld(), m_worldToWin(), m_isDragging(false), m_dragStartPos()
{m_layers.fill(nullptr);setMouseTracking(true);setRoiRect(QRectF(270, 30, 410, 290));
}void Qk2dView::setRoiRect(const QRectF &roi)
{m_roiRect = roi.normalized();calcTransform();update();
}void Qk2dView::setDrawer(Layer layer, std::shared_ptr<Qk2dViewLayer> drawer)
{if(m_layers[layer]){m_layers[layer]->setView(nullptr);}if(drawer){drawer->setView(this);}m_layers[layer] = drawer;update();
}std::shared_ptr<Qk2dViewLayer> Qk2dView::getDrawer(Layer layer)
{return m_layers[layer];
}void Qk2dView::setDrawerVisiable(Layer layer, bool visiable)
{if(m_layers[layer]){m_layers[layer]->setVisiable(visiable);update();}
}void Qk2dView::mousePressEvent(QMouseEvent *event)
{if(event->type() == QEvent::MouseButtonDblClick){event->setAccepted(false);return;}else{QWidget::mousePressEvent(event);if(event->button() == Qt::MidButton){m_isDragging = true;m_dragStartPos = event->localPos();}for(auto it = m_layers.rbegin(); it != m_layers.rend(); ++it){if((*it) && (*it)->visiable()){(*it)->mousePressEvent(event);if(event->isAccepted()){break;}}}}
}void Qk2dView::mouseReleaseEvent(QMouseEvent *event)
{QWidget::mouseReleaseEvent(event);if(m_isDragging){m_isDragging = false;}for(auto it = m_layers.rbegin(); it != m_layers.rend(); ++it){if((*it) && (*it)->visiable()){(*it)->mouseReleaseEvent(event);if(event->isAccepted()){break;}}}
}void Qk2dView::mouseMoveEvent(QMouseEvent *event)
{QWidget::mouseMoveEvent(event);if(m_isDragging){QPointF pos = event->localPos();QPointF trans = pos - m_dragStartPos;m_dragStartPos = pos;setRoiRect(m_roiRect.translated(-trans.x() * m_winToWorld.m11(), -trans.y() * m_winToWorld.m22()));}for(auto it = m_layers.rbegin(); it != m_layers.rend(); ++it){if((*it) && (*it)->visiable()){(*it)->mouseMoveEvent(event);if(event->isAccepted()){break;}}}
}void Qk2dView::mouseDoubleClickEvent(QMouseEvent *event)
{QWidget::mouseDoubleClickEvent(event);for(auto it = m_layers.rbegin(); it != m_layers.rend(); ++it){if((*it) && (*it)->visiable()){(*it)->mouseDoubleClickEvent(event);if(event->isAccepted()){break;}}}
}void Qk2dView::paintEvent(QPaintEvent *event)
{QWidget::paintEvent(event);QPainter painter(this);painter.setRenderHint(QPainter::Antialiasing, true);painter.fillRect(rect(), QColor(20, 20, 20));for(auto it = m_layers.begin(); it != m_layers.end(); ++it){if(*it && (*it)->visiable()){(*it)->draw(painter);}}
}// 滚轮滚动
void Qk2dView::wheelEvent(QWheelEvent *event)
{QWidget::wheelEvent(event);int numDegrees = event->angleDelta().y() / 8;double zoomFactor = 1 - numDegrees / 15.0 * 0.1;QRectF viewRect = m_winToWorld.mapRect(QRectF(rect()));QPointF pos = m_winToWorld.map(event->position());double top = pos.y() + (viewRect.top() - pos.y()) * zoomFactor;double bottom = pos.y() + (viewRect.bottom() - pos.y()) * zoomFactor;double left = pos.x() + (viewRect.left() - pos.x()) * zoomFactor;double right = pos.x() + (viewRect.right() - pos.x()) * zoomFactor;QRectF rect(left, top, right-left, bottom-top);setRoiRect(rect);
}void Qk2dView::resizeEvent(QResizeEvent *event)
{QWidget::resizeEvent(event);calcTransform();
}// 计算转换(平移和缩放)
void Qk2dView::calcTransform()
{double w2hRatio = m_roiRect.width() / m_roiRect.height();double w(width()), h(height());double tempWidth = height() * w2hRatio;QRectF windowRect; // in window coordinate systemif(tempWidth <= width()){w = tempWidth;windowRect = QRectF((width()-w)/2.0, 0, w, h);}else{h = width() / w2hRatio;windowRect = QRectF(0, (height()-h) / 2.0, w, h);}double scale_x, scale_y, trans_x, trans_y;scale_x = windowRect.width()/m_roiRect.width();scale_y = -windowRect.height()/m_roiRect.height();trans_x = windowRect.left() - scale_x*m_roiRect.left();trans_y = windowRect.bottom() - scale_y*m_roiRect.top();m_worldToWin = QTransform::fromScale(scale_x, scale_y);m_worldToWin *= QTransform::fromTranslate(trans_x, trans_y);m_winToWorld = m_worldToWin.inverted();
}

1.5 recipelayer.cpp

#include "recipelayer.h"
#include "component.h"
#include <QDebug>RecipeLayer::RecipeLayer(): Qk2dViewLayer(), m_selecting(false), m_selectStartPos(), m_selectEndPos()
{}void RecipeLayer::mousePressEvent(QMouseEvent *event)
{if(event->button() == Qt::LeftButton){QPointF pos = m_view->winToWorld().map(event->localPos());m_selecting = true;m_selectStartPos = pos;m_selectEndPos = pos;}
}void RecipeLayer::mouseReleaseEvent(QMouseEvent *event)
{if(event->button() == Qt::LeftButton){if(m_selecting) // selecting{m_selecting = false;QRectF rect = QRectF(m_selectStartPos, m_selectEndPos).normalized();for(auto & compnent : g_m_components){if(rect.contains(compnent.m_pos)){compnent.m_selected = true;}else if(!(event->modifiers() & Qt::ControlModifier)){compnent.m_selected = false;}}}}m_view->update();
}void RecipeLayer::mouseMoveEvent(QMouseEvent *event)
{QPointF pos = m_view->winToWorld().map(event->localPos());if(m_selecting){m_selectEndPos = pos;}m_view->update();
}void RecipeLayer::draw_ex(QPainter &painter)
{QPen pen;pen.setWidth(2);pen.setCosmetic(true);painter.setTransform(m_view->worldToWin());for(const auto & compnent : g_m_components){if(compnent.m_selected){pen.setColor(Qt::green); // 选中}else{pen.setColor(Qt::blue); // 未选中}painter.setPen(pen);// draw roi rectpainter.drawLine(compnent.m_vertex[0], compnent.m_vertex[2]);painter.drawLine(compnent.m_vertex[2], compnent.m_vertex[4]);painter.drawLine(compnent.m_vertex[4], compnent.m_vertex[6]);painter.drawLine(compnent.m_vertex[6], compnent.m_vertex[0]);// draw polaritypainter.drawLine(compnent.m_vertex[1] + 0.3*(compnent.m_vertex[5] - compnent.m_vertex[1]),compnent.m_vertex[0] + 0.3*(compnent.m_vertex[2]-compnent.m_vertex[0]));painter.drawLine(compnent.m_vertex[1] + 0.3*(compnent.m_vertex[5] - compnent.m_vertex[1]),compnent.m_vertex[0] + 0.7*(compnent.m_vertex[2]-compnent.m_vertex[0]));}if(m_selecting) // ROI区域触发{pen.setColor(Qt::yellow);painter.setPen(pen);painter.setBrush(QColor(255, 255, 255, 100));painter.drawRect(QRectF(m_selectStartPos, m_selectEndPos));}
}

1.6 resultlayer.pp

#include "resultlayer.h"ResultLayer::ResultLayer(): Qk2dViewLayer(), m_text("Good"), m_status(true)
{}void ResultLayer::setText(const QString& text, bool status)
{m_text = text;m_status = status;if(m_view){m_view->update();}
}void ResultLayer::draw_ex(QPainter &painter)
{QPen pen;pen.setWidth(2);pen.setCosmetic(true);QBrush brush;QColor color;if(m_status){color = QColor(0, 255, 0, 150);}else{color = QColor(255, 0, 0, 150);}pen.setColor(color);brush.setColor(color);painter.setPen(pen);painter.setBrush(brush);QRectF winRect = m_view->rect();QFont font = painter.font();font.setBold(true);font.setPixelSize(std::min(winRect.width(), winRect.height())/1.5);painter.setFont(font);painter.drawText(winRect, Qt::AlignHCenter | Qt::AlignVCenter, m_text);
}

2.7 mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "boardlayer.h"
#include "recipelayer.h"
#include "componentlayer.h"
#include "resultlayer.h"MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow), m_view(this)
{ui->setupUi(this);setCentralWidget(&m_view);std::shared_ptr<BoardLayer> boardLayer = std::make_shared<BoardLayer>();m_view.setDrawer(Qk2dView::BoardLayer, boardLayer);std::shared_ptr<RecipeLayer> recipeLayer = std::make_shared<RecipeLayer>();m_view.setDrawer(Qk2dView::RecipeLayer, recipeLayer);std::shared_ptr<ComponentLayer> compLayer = std::make_shared<ComponentLayer>();m_view.setDrawer(Qk2dView::ComponentLayer, compLayer);std::shared_ptr<ResultLayer> resultLayer = std::make_shared<ResultLayer>();m_view.setDrawer(Qk2dView::ResultLayer, resultLayer);resultLayer->setText("OK", true);//    resultLayer->setVisiable(false);
}MainWindow::~MainWindow()
{delete ui;
}

2.8 main.cpp

#include "mainwindow.h"#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);MainWindow w;w.show();return a.exec();
}

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qt5的qk2dview

1、头文件(.h)

2、 .cpp文件

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qt5的qk2dview

1、 头文件(.h)

2、 .cpp文件

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1、头文件(.h)