Добавлен пример. Изменена структура

example/example.pro

@@ -0,0 +1,25 @@
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+CONFIG += c++11
+
+# You can make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+SOURCES += \
+    main.cpp \
+    ../qtsgraph.cpp
+
+HEADERS += \
+    ../qtsgraph.h
+
+FORMS +=
+
+TRANSLATIONS += 
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

example/main.cpp

@@ -0,0 +1,39 @@
+#include "../qtsgraph.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+
+    /*
+     * Задаётся размер и положение окна
+     * (int w = 640, int h = 480, int x = -1, int y = -1, QWidget *parent = nullptr)
+     * В случае отрицательного значения x или y, окно создаётся в центре экрана.
+     */
+    QTSGraph w(1024, 768);
+
+    w.show();
+    return a.exec();
+}
+
+void QTSGraph::PaintBox()
+{
+    // Начало рисования
+
+    SetColor(0x00AAAAAA);
+    Line(120, 120, 135, 260);
+    SetWidth(5);
+    SetColor(clBlue);
+    Line(110, 110, 125, 250);
+    PutPixel(100, 100, 0x00FF0000, 10);
+    Delay(2000);
+    PutPixel(300, 100);
+    int x = 1;
+    while(!MouseClicked() && x < 1024)
+    {
+        PutPixel(x, 50, 0x555555+x*16, 5);
+        x += 1;
+        Delay(1);
+    }
+
+    // Конец рисования
+}

main.cpp

@@ -1,5 +1,4 @@
 #include "qtsgraph.h"
-#include <QApplication>
 
 int main(int argc, char *argv[])
 {
@@ -8,9 +7,9 @@ int main(int argc, char *argv[])
     /*
      * Задаётся размер и положение окна
      * (int w = 640, int h = 480, int x = -1, int y = -1, QWidget *parent = nullptr)
-     * В случае отрицательнго значения x или y, окно создаётся в центре экрана.
+     * В случае отрицательного значения x или y, окно создаётся в центре экрана.
      */
-    QTSGraph w(1024,768);
+    QTSGraph w(800, 600);
 
     w.show();
     return a.exec();
@@ -18,18 +17,12 @@ int main(int argc, char *argv[])
 
 void QTSGraph::PaintBox()
 {
-    // Тут рисовать
+    // Начало рисования
 
-    PutPixel(100,100);
+    SetColor(clGreen);
-    Delay(2000);
+    Line(0, 0, 800, 600);
-    PutPixel(300,100);
+    SetColor(0xFF0000);
-    int x=1;
+    Line(800, 0, 0, 600);
-    while(!MouseClicked() && x < 1024)
-    {
-        PutPixel(x,50);
-        x+=1;
-        Delay(200);
-    }
 
     // Конец рисования
 }

qtSimpleGraph.pro

@@ -15,8 +15,7 @@ SOURCES += \
 HEADERS += \
     qtsgraph.h
 
-FORMS += \
+FORMS +=
-    qtsgraph.ui
 
 TRANSLATIONS += \
     qtSimpleGraph_ru_RU.ts

qtsgraph.cpp

@@ -1,18 +1,15 @@
 #include "qtsgraph.h"
-#include "ui_qtsgraph.h"
 
 void QTSGraph::Delay(int ms)
 {
     QTime dieTime= QTime::currentTime().addMSecs(ms);
     while (QTime::currentTime() < dieTime)
-        QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
+        QCoreApplication::processEvents(QEventLoop::AllEvents, 50);
 }
 
 QTSGraph::QTSGraph(int w, int h, int x, int y, QWidget *parent)
     : QMainWindow(parent)
-    , ui(new Ui::QTSGraph)
 {
-    ui->setupUi(this);
     if(x < 0 || y < 0)
     {
         QDesktopWidget desktop;
@@ -23,8 +20,10 @@ QTSGraph::QTSGraph(int w, int h, int x, int y, QWidget *parent)
     }
     this->setGeometry(x, y, w, h);
     this->setWindowTitle("Рисунок");
-    m_Pixmap = QPixmap(w, h);
+    Canvas = QPixmap(w, h);
-    m_Pixmap.fill(Qt::white);
+    Canvas.fill(Qt::white);
+    QRgb DefaultColor = 0x00000000;
+    Pen = QPen(QBrush(QColor(DefaultColor)), 1);
     StartTimer = new QTimer();
     connect(StartTimer, SIGNAL(timeout()), this, SLOT(slotStartTimer()));
     StartTimer->start(500);
@@ -32,7 +31,7 @@ QTSGraph::QTSGraph(int w, int h, int x, int y, QWidget *parent)
 
 QTSGraph::~QTSGraph()
 {
-    delete ui;
+    // Деструктор
 }
 
 bool QTSGraph::MouseClicked()
@@ -42,11 +41,29 @@ bool QTSGraph::MouseClicked()
     return m;
 }
 
-void QTSGraph::PutPixel(int x, int y, Qt::GlobalColor c)
+void QTSGraph::PutPixel(int x, int y, QRgb c, int PenWidth)
 {
-    QPainter painter(&m_Pixmap);
+    QPainter painter(&Canvas);
-    painter.setPen(QPen(QBrush(QColor(c)), 5 ));
+    painter.setPen(QPen(QBrush(QColor(c)), PenWidth));
-    painter.drawPoint( x, y );
+    painter.drawPoint(x, y);
+    update();
+}
+
+void QTSGraph::SetColor(QRgb c)
+{
+    Pen.setColor(QColor(c));
+}
+
+void QTSGraph::SetWidth(int PenWidth)
+{
+    Pen.setWidth(PenWidth);
+}
+
+void QTSGraph::Line(int x1, int y1, int x2, int y2)
+{
+    QPainter painter(&Canvas);
+    painter.setPen(Pen);
+    painter.drawLine(x1, y1, x2, y2);
     update();
 }
 
@@ -59,7 +76,7 @@ void QTSGraph::slotStartTimer()
 void QTSGraph::paintEvent(QPaintEvent *event)
 {
     QPainter p(this);
-    p.drawPixmap(0, 0,m_Pixmap);
+    p.drawPixmap(0, 0, Canvas);
 }
 
 void QTSGraph::mousePressEvent(QMouseEvent *event)

qtsgraph.h

@@ -1,3 +1,4 @@
+#include <QApplication>
 #include <QMainWindow>
 #include <QPainter>
 #include <QDesktopWidget>
@@ -9,9 +10,11 @@
 #include <QTimer>
 #include <QTime>
 
-QT_BEGIN_NAMESPACE
+#define clRed 0x00FF0000
-namespace Ui { class QTSGraph; }
+#define clGreen 0x0000FF00
-QT_END_NAMESPACE
+#define clBlue 0x000000FF
+#define clBlack 0x00000000
+#define clWhite 0x00FFFFFF
 
 class QTSGraph : public QMainWindow
 {
@@ -20,19 +23,23 @@ class QTSGraph : public QMainWindow
 public:
     QTSGraph(int w = 640, int h = 480, int x = -1, int y = -1, QWidget *parent = nullptr);
     ~QTSGraph();
-    void PutPixel(int x, int y, Qt::GlobalColor c = Qt::red);
+
     void Delay(int ms = 1000);
+    void Line(int x1, int y1, int x2, int y2);
     bool MouseClicked();
+    void PutPixel(int x, int y, QRgb c = 0x00000000, int PenWidth = 1);
+    void SetColor(QRgb c);
+    void SetWidth(int PenWidth);
 
 private slots:
     void slotStartTimer();
 
 private:
-    Ui::QTSGraph *ui;
+    QPixmap Canvas;
-    QPixmap   m_Pixmap;
     QTimer *StartTimer;
     bool EventMouseClicked = false;
     void PaintBox();
+    QPen Pen;
 
 protected:
     void paintEvent(QPaintEvent *event) override;

qtsgraph.ui

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>QTSGraph</class>
- <widget class="QMainWindow" name="QTSGraph">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>800</width>
-    <height>600</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>QTSGraph</string>
-  </property>
-  <widget class="QWidget" name="centralwidget"/>
-  <widget class="QMenuBar" name="menubar"/>
-  <widget class="QStatusBar" name="statusbar"/>
- </widget>
- <resources/>
- <connections/>
-</ui>